Implements a Zip() utility function. Refactor existing

chrome/browser/extensions/extensions_service.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/extensions_service.h"
 
 #include "base/file_util.h"
 #include "base/gfx/png_encoder.h"
 #include "base/scoped_handle.h"
 #include "base/scoped_temp_dir.h"
@@ skipping 10 matching lines @@
 #include "chrome/browser/extensions/extension_browser_event_router.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/utility_process_host.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_error_reporter.h"
 #include "chrome/common/extensions/extension_unpacker.h"
 #include "chrome/common/json_value_serializer.h"
 #include "chrome/common/notification_service.h"
 #include "chrome/common/pref_service.h"
-#include "chrome/common/unzip.h"
+#include "chrome/common/zip.h"
 #include "chrome/common/url_constants.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 
 #if defined(OS_WIN)
 #include "base/registry.h"
 #endif
 
 // ExtensionsService
 
 const char* ExtensionsService::kInstallDirectoryName = "Extensions";
@@ skipping 911 matching lines @@
 
 bool ExtensionsServiceBackend::ShouldInstall(const std::string& id,
                                              const std::string& version) {
   FilePath dir(install_directory_.AppendASCII(id.c_str()));
   std::string current_version;
   if (ReadCurrentVersion(dir, &current_version)) {
     return CheckCurrentVersion(version, current_version, dir);
   }
   return true;
 }